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Mastozoología neotropical
versión impresa ISSN 0327-9383versión On-line ISSN 1666-0536
Resumen
UDRIZAR SAUTHIER, Walter O.; ABBA, Agustín M. y UDRIZAR SAUTHIER, Daniel E.. Nests of Oligoryzomys sp. and Holochilus brasiliensis (Rodentia, Cricetidae) in eastern Entre Ríos Province, Argentina. Mastozool. neotrop. [online]. 2010, vol.17, n.1, pp.207-211. ISSN 0327-9383.
We describe the structure and location of nests built by Oligoryzomys sp. and Holochilus brasiliensis in eastern Entre Ríos Province, Argentina. Nests were associated with water bodies. Nests of Oligoryzomys sp. averaged 18 cm length, 8 cm width, and 10 cm height and were found at elevated sites, while nests of H. brasiliensis were a few centimetres above water surface and had an ellipsoid shape with a mean size of 22.5 cm length, 13 cm width, and 18.7 cm height. A seasonal nest building pattern was observed that might indicate that these species construct their nests during spring and summer for breeding. Knowing the biology of these potential pest species of economic and public health importance in a natural environment will help defining an effective control program.
Palabras clave : Ecology; Natural history; Nesting behaviour; Sigmodontinae.